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Re: Extra Class for the Winter Series

PostPosted: Thu Oct 23, 2008 8:17 pm
by Glen Relf
Shawn

I run the Civic shell really nice but a little tight on the width it does tend to rub on the rear tyres.

Re: Extra Class for the Winter Series

PostPosted: Thu Oct 23, 2008 9:02 pm
by Simon Taylor
Shawn i've managed to fettle mine so i can get trakpower 4900's in. Just need one of them tamiya speedo's :x Anyone got one knocking about that they don't want?

Re: Extra Class for the Winter Series

PostPosted: Thu Oct 23, 2008 9:16 pm
by Shawn Herrington
Glen Relf wrote:Shawn

I run the Civic shell really nice but a little tight on the width it does tend to rub on the rear tyres.


Thanks for the warning Glen.
The Civic shell looks a little more racey than the Suzuki version - and it's cheaper too.

Must say though, the M03R chassis is very BLUE !!!!!! :D


Did you attack it with a Dremmel Si? I don't want to spoil mine and have ask a friend if he has any old 3200's he might not want any more.
Otherwise it will have to be a case of un-earthing my Spintec to bring some Tamiya 1400 race packs back to life.

Re: Extra Class for the Winter Series

PostPosted: Thu Oct 23, 2008 9:22 pm
by Simon Taylor
Yes Shawn got the flies out and opened it up a bit now trakpower 4900's fit nice and snug, didn't have to take too much off. Should get 2 runs out of one pack.

Re: Extra Class for the Winter Series

PostPosted: Fri Oct 24, 2008 12:38 pm
by Dan Hamblin
Simon Taylor wrote:Yes Shawn got the flies out and opened it up a bit now trakpower 4900's fit nice and snug, didn't have to take too much off. Should get 2 runs out of one pack.

You've trained flies to work on your car?! :o :lol:

I think with a 4900 battery you will be able to do the whole meeting without discharging.

Oh, and I think we should be enforcing the LiPo cut-off switch rule, they aren't exactly expensive.

Regards,

Dan

Re: Extra Class for the Winter Series

PostPosted: Fri Oct 24, 2008 7:52 pm
by Richard Hathaway
The idea of having a cut-out is to prevent the battery being discharged to the point where cell imbalance becomes an issue for the next charge cycle, possibly leading to unwanted nastiness happening to the battery. With the higher current draw of the motors used in TCs this is more likely to happen than in a Mini which will only take 1000 - 1400mAH from the battery per race (unless of course someone tries to run 3 heats and a final without re-charging the battery). So I think that provided a LIPO is re-charged in a protective container/bag and anyone running a Mini is careful of their charging routine then a cut-out isn't necessary for the Minis. (But still necessary for the TCs because of the higher current draw.) There is also the problem of connecting a cut-out to a Tamiya ESC. The BEC is contained in the ON/OFF switch which therefore must be connected to the BATT socket on the ESC - so where do you plug the cut-out into? The only way the connection can be made is to cut into the ON/OFF switch wiring or use a "Y" lead.

On the subject of opening up the chassis to take a bigger battery - is this a good idea? Won't it reduce the stiffness/strength of the chassis and run the risk of the chassis breaking in a crash leaving only the bodyshell to connect the front and rear wheels?

Re: Extra Class for the Winter Series

PostPosted: Mon Oct 27, 2008 1:16 pm
by Andy Crawford
So has a decision been made yet.......am I bringing the mini on Sunday? if so what motor class will be run, silver can or sport tuned? :twisted: what about the Lipo cut off, do I need one?

Re: Extra Class for the Winter Series

PostPosted: Mon Oct 27, 2008 2:07 pm
by Shawn Herrington
Judging by the feedback I would say Mini's. There's plenty of interest for at least one heat..
My M03 is built but I am waiting for some shocks to arrive (apparently the kit items are vey brittle and break easily).

A Sport Tuned motor and Tamiya Speedo are installed so as you can see I am pushing the rules to the max :D .
However I have no batteries that will fit and have ordered 3200 Lipo's from HongKong, which are unlikely to be here for the weekend.
Reading Professor Hathaways' Thesis on Lipo Cut off's I say run without them and don't run the packs too low.

Re: Extra Class for the Winter Series

PostPosted: Mon Oct 27, 2008 2:42 pm
by Andy Crawford
I was hoping that would be the decision regarding Lipo cut offs........So has it been decided that sport tuned will be the class run?

Looks unlikey that my Lipos will get here from our far eastern brothers in time either :(

Re: Extra Class for the Winter Series

PostPosted: Mon Oct 27, 2008 2:53 pm
by Shawn Herrington
No nothing has been decided, but taking the Tamiya Cup and Eastbournes rules into consideration I think we should just mirror theirs.
A. It keeps things simple plus nice'n cheap.
B. New members know exactly what the score is, theoretically be on the pace immediatly and importantly are more likely to come back for more.
C. Makes things easier when it comes to visiting other clubs running the class.