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Post by lesbaldry on Oct 15, 2008 15:02:34 GMT
I think Les was meaning at a BRCA AGM sort of level Mark? Yes Simon from many years ago,during the early 90's in 1/8th circuit where politics and Dodgy dealing was rife!!nothing to do with the SLCC at all, I have nothing but praise for that series along with Mark and others hard work!
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Post by yellowshark on Oct 15, 2008 16:11:52 GMT
From acorns...
Last years SLCC winners got 13.5 adopted....
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Post by yellowshark on Oct 15, 2008 18:58:58 GMT
Hey Mark, if Craig is arriving at the thermometer quicker, he would overshoot wouldn't he? Must 3 inches longer ;D Weekend project is to extract and measure before and after video frames
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Post by number1dan on Oct 15, 2008 19:11:22 GMT
we could say to the brca or slcc people that the club that won slcc 2008 mostly run 17.5 so it must be a promising class
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Post by lesbaldry on Oct 16, 2008 7:19:17 GMT
Nice one Mark/Simon and others,your comments on Race chat have started the ball rolling and hopefully draw an interest,there is one or two slightly negative comments there but as I thought we do seem to be the only club testing the 17.5..Bashley, GB's frontier,s men "watch out for them red Indians up north "
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Post by oldtimeracer on Oct 16, 2008 7:53:25 GMT
Looks like the 17.5 class could be causing some interest nationwide. Would be nice to see a few more clubs take it up. Maybe a South Hants mass visit to Aldershot would be a good way to get it going. Some interesting comments though. I am surprised that many people have not even considered it though. Keep pushing and it will be one of the top classes for next year I reckon and not just as a beginners class either.
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Post by Mark Townsend on Oct 16, 2008 8:14:09 GMT
So heres an interesting thing. After telling CML we were all running LRP, Nosram, Speed Passion etc and I was surprised they weren't importing the Novak ones.. guess what? they're getting a load in for next week. Seems they may be interested in the 17.5 class after all.
Nice thread on race chat guys, I think a trip to a club that still runs 27BR is in order. See how everyone gets on at a big track against brushed motors. If we (the cutting edge club) can really push 17.5 for beginners and old hands alike across the South, I don't see a problem getting it into at least one regional series.
Apologies Les I got the wrong impression from the politics post.
Mark
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Post by lesbaldry on Oct 16, 2008 9:05:54 GMT
Apologies Les I got the wrong impression from the politics post. Mark No Prob Mark..I thought you had ;D..Ill tell you about it one day "serious stuff!"..makes the Lipo sack issue childs play I would rather support the club on sundays but a trip to Aldershot could give the 17.5 a good test...but to be honest my short run at the Cotswolds did surprise me..the top end was faster than I thought on such a big track!a match for any stock.
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Post by Mark Townsend on Oct 16, 2008 9:46:47 GMT
I really liked the Cotswolds track and would be quite happy to go up for an away day.
Here's a question. How much juice are you pulling out of the lipo with these 17.5s? Round Bashley with my 10.5 i'm having to add in around 21-2200 after a run. At the Cotswolds I was pulling out nearly 3100 every run. Just be intrigued to know how much the 17 is pulling.
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Post by oldtimeracer on Oct 16, 2008 10:13:22 GMT
Running 17.5 at Bashley I was putting between 1700 and 1900 back in after a race.
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Post by lesbaldry on Oct 16, 2008 10:17:29 GMT
I really liked the Cotswolds track and would be quite happy to go up for an away day. Here's a question. How much juice are you pulling out of the lipo with these 17.5s? Round Bashley with my 10.5 i'm having to add in around 21-2200 after a run. At the Cotswolds I was pulling out nearly 3100 every run. Just be intrigued to know how much the 17 is pulling. Around 1200 ish depending apon the grip and who,s chasing you ;D...put it this way I ran for over 10 mins at reasonable race pace on Terrys cheapies just befor the cut out kicked in.
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Post by oldtimeracer on Oct 16, 2008 10:30:47 GMT
Does it make any difference what cells you run? Whether 3600, 3800 20c or 25c etc.
It does depend a lot on grip levels though. High grip more throttle I suppose. Low grip less battery usage. Same as real cars and fuel.
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Post by Simon Crabb on Oct 16, 2008 10:59:26 GMT
I was pulling out 1300-1400 on Sunday with the 17.5.
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Post by lesbaldry on Oct 16, 2008 11:31:45 GMT
I was pulling out 1300-1400 on Sunday with the 17.5. Sounds about right Mr Hammer thumb ;D LOL
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Post by lesbaldry on Oct 16, 2008 11:48:49 GMT
Does it make any difference what cells you run? Whether 3600, 3800 20c or 25c e. It should'nd do Ian or we would see quite a differance in perfomance..I believe Keith is running Terrys 20C cheapies,he was flying last sunday with the LRP..these litle motors dont need the amps like lower winds?
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Post by Simon Crabb on Oct 16, 2008 11:56:32 GMT
Hammer thumb! You should be calling Lloydy that if he's pulling 17-1900 out! But it's true, that's how I roll...
I'm running the Orion 2400s - 20C (from Terry). They seem fine. Well, one of them seems fine, I'm sure the other one is less fine, it seems to go off at about 3 minutes. I need to number them so I know which is which and see if it's always the same one!
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Post by oldtimeracer on Oct 16, 2008 12:25:41 GMT
It's true. I am a throttle jammer. In honesty I do believe that is one of my biggest problems with handling. If I was smoother on the throttle it would certainly cure some of my handling problems but there you go. You cant teach an old dog new tricks. At least with the 17.5 it is not quite so critical.
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Post by lesbaldry on Oct 16, 2008 12:48:22 GMT
[/quote]Around 1200 ish depending upon the grip and who,s chasing you ;D...put it this way I ran for over 10 mins at reasonable race pace on Terrys cheapies just befor the cut out kicked in.[/quote] Some misleading info above..sorry I forgot,Im running a higher punch lately so the figures Will be some what more...probabley 14/1500 ish?I will check this weekend......Hammer thumb Mk 2
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Post by Reuben on Oct 16, 2008 12:59:56 GMT
i was pulling between 900-1200 on sunday, 900 early when grip was wet and damp
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Post by Simon Crabb on Oct 16, 2008 13:20:57 GMT
Ian! Does your TX have a throttle 'speed' type setting? I know mine does, it works by effectively slowing down what you do with your thumb, so if you just whack the power in it feeds it in slowly for you. It's not the same as the throttle curve setting, nor the 'rate' - which is a bad, incorrect word for effectively limiting the end point.
It works too, I used it when I was playing with 10.5, calmed things down nicely, but it felt like cheating! As you say, is there a need on 17.5, there's not enough power to get it lairy when you get on the power.
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Post by oldtimeracer on Oct 16, 2008 15:24:38 GMT
I'm using the LRP Sphere. Will check what settings I have on it. Will also check the transmitter setting and see what adjustments there are to be had if I can understand the manual! I have been running the punch setting on the speedo quite high. Not sure whether that affects it or not. If you set the punch setting high then turn down the throttle speed setting on the transmitter what happens? Will try it and see.
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Post by Mark Townsend on Oct 16, 2008 15:58:09 GMT
Dropped the punch down to nothing on the 10.5 round Bashley and it calmed the car down and saved me loads of time over a lap. In fact it helped with consistency as well as the car wasn't so wildly out of control out of every bend.
Conversely at the Cotswolds I had the punch up at maximum and it shaved a second off my lap time by being able to launch the car out of corners and having time to correct if needed before the next corner.
So punch can be your friend on the right track. I would imagine with the 17.5 it needs the speedo punch up high to get it launched out of corners but maybe Ian you should back off from number 8 down to 4 or as Simon says run a shallow curve on the throttle.
I'm looking forward to giving mine a spin on Sunday if the weather holds.
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Post by yellowshark on Oct 16, 2008 17:25:50 GMT
Ian! Does your TX have a throttle 'speed' type setting? I know mine does, it works by effectively slowing down what you do with your thumb, so if you just whack the power in it feeds it in slowly for you. It's not the same as the throttle curve setting, nor the 'rate' - which is a bad, incorrect word for effectively limiting the end point. It works too, I used it when I was playing with 10.5, calmed things downquote] Simon I might be wrong but I do not read my KO manual in the same way. I read throttle speed as delaying the reaction, not something I suspect us older people need! IE once it reacts power allpication is still linear. The curve is the one that feeds the power in progressively at the lower end. We have never played with it though; I just use the end point adjustment on Ross to keep his top end speed down
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Post by Simon Crabb on Oct 16, 2008 18:53:57 GMT
I use Futaba.
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Post by mattsedgley on Oct 16, 2008 18:56:43 GMT
And rather an avanced futaba at that also!
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Post by yellowshark on Oct 16, 2008 19:15:05 GMT
That doesn't necessarily make a difference Simon, although what you will find that some functions have a different name. Ross has a Futaba and a KO ans some things have diffeent names but do the same thing. Irrespective of name, Curve feeds the power progressively. Now it may be that Speed means some different on your Futaba to our KOs, that I don't know ;D But irrespective, Ian I think doesn't need reaction speed reduced, it would be the way the power is fed in to compensate for heavy thumbs
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Post by lesbaldry on Oct 16, 2008 20:33:08 GMT
Sanwa call it servo slow..basicaly if you were to connect a servo to the throttle/speedo port on the RX it would slow down the speed between neutral and full throw(or full power) I tried this when playing with a silly wind mod,yes it worked to a degree but the down side is that you will be slow of the line at starts and on my set it works both ways,it returns slow too"over run the corner" and when you need the brakes in a panic its too late "ooops sorry ;D"..check how your system works befor driveing..I stupidly made this mistake The best way I have found to soften a throttle response is to use around -30/40% Expo,this will stop a little bit of that speed snatch when you plant the gas,using this amount of Expo can sometimes make the throttle feel more Linear too(half stick is half throttle),I also use this amount on the steering too,the steering is softened around the center and can help a twitchy car be stable down a long strait. As Mark says punch setting is very important on some tracks,remember if your are a throttle jammer you can drop the punch right back to cure the spin out but gear up to regain or even inprove top speed,thats how I preferred to run some brushed motors,punch very low and have the motor slightly over geared.it used to kill the wicked punch on a torque'y motor but give it the top end of a good revy motor,works well in very low grip and in the wet I hope this helps some but bottom line is there is no substitute for a smooth thumb
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Post by oldtimeracer on Oct 17, 2008 7:21:17 GMT
All very interesting. Will need some experimentation I think.
My problem is as said. I use the throttle more as an on/off switch so need something to slow the response down rather that have the wheels spin up every time I hit the throttle. Maybe throttle curve will help to slightly delay the initial response. Will be playing with different settings to see what happens. Have tried it on the bench but it's impossible to judge what is happening.
Or maybe just buy new thumbs!
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