RE: .28 in a funfactor? oh dear....  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       

All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> CEN Racing Support >> RE: .28 in a funfactor? oh dear....
Page: <<   < prev  1 [2] 3 4 5 6 7 8 9 10   next >   >>  

Login
Message << Older Topic   Newer Topic >>
RE: .28 in a funfactor? oh dear.... - 6/23/2005 3:23:11 AM   
rolland


 

Posts: 794
Joined: 8/15/2004
From: Tacoma, WA, USA
Status: offline 		You can't give up now you are to far into it. You can run it as a single speed for break-in or until you get the right clutch bell. Finding a 13-23 tooth single speed 1/8 scale bell should be easy enough.
It is amazing how long it takes to break in that SH motor, some people at the track said the motor didn't start running right until the 6 or 7 tank (on the XLB that is almost 300cc's to a tank). With that much motor you probably aren't going to want second gear right away anyhow.


rolland

(in reply to poor judgement)
       Post #: 26

RE: .28 in a funfactor? oh dear.... - 6/24/2005 5:07:58 PM   
poor judgement



Posts: 2065
Joined: 4/16/2004
From: Cleethorpes, UNITED KINGDOM
Status: offline 		Thanks for the info re break in rolland, much appreciated mate.

Im pretty much settled on the c/b now, it will be 2 speed, but like u say... so i will probably lock 2nd out for breakin in - just in case

I will be fitting a larger tank too, gonna have to shuffle the electric n stuff about a bit, but ive seen a layout that will work for me. I want as much weight up front as possible, maybe even add some lead ballast to make it usable, still, a long way to go yet - the bank has just screwed up my account and debit card, which isnt helping... maybe not such a bad thing eh?

I wont give up on it, I just want to get the right bits first time around, its cost me way too much already.

_____________________________

http://homepage.ntlworld.com/robert.palmer97/CEN%20Test%20Pages/Mods%20to%20make%20a%20CEN%20semidecent.htm

(in reply to rolland)
       Post #: 27

RE: .28 in a funfactor? oh dear.... - 6/24/2005 5:14:23 PM   
Scouser


 

Posts: 1002
Joined: 1/14/2005
From: Liverpool, UNITED KINGDOM
Status: offline 		Are you going to shift the battery box onto the main chassis or is it to be the wheelie bar?

_____________________________

CEN Fun Factor, GS SUT Pro, AE RC10 B4, Hotbodies D4
AE RC10T4, Kyosho Lazer ZX-5

(in reply to poor judgement)
       Post #: 28

RE: .28 in a funfactor? oh dear.... - 6/24/2005 5:43:37 PM   
poor judgement



Posts: 2065
Joined: 4/16/2004
From: Cleethorpes, UNITED KINGDOM
Status: offline 		I might leave the box, but move the batt - will see what space i have left.

That box has saved me from loads of flips, but then again, having the batt in there isnt helping the fronts stay down...

_____________________________

http://homepage.ntlworld.com/robert.palmer97/CEN%20Test%20Pages/Mods%20to%20make%20a%20CEN%20semidecent.htm

(in reply to Scouser)
       Post #: 29

RE: .28 in a funfactor? oh dear.... - 6/25/2005 3:57:21 AM   
rolland


 

Posts: 794
Joined: 8/15/2004
From: Tacoma, WA, USA
Status: offline 		Break that motor in right and it will scare you. That thing throws around an XLB like it isn't even there.
What clutch bell did you find, a part # or link would be great.
Last weekend was the first time I ran an actual CEN 2 speed bell and it is amazing how much wear happened in about 8 tanks. The RS4 bell that I was using worked ok but was just a pain to shim. What I don't get is CEN sells a 2 speed kit with steel threaded pinons for the RS4 but they don't have one available for their own products.
What I am going to try to do this weekend is to take my CEN bell around to the different hobbie shops in the area and see what fits. I will post my findings with part numbers.


rolland

(in reply to poor judgement)
       Post #: 30

RE: .28 in a funfactor? oh dear.... - 6/25/2005 2:37:39 PM   
poor judgement



Posts: 2065
Joined: 4/16/2004
From: Cleethorpes, UNITED KINGDOM
Status: offline 		im looking at using this pinion set and this c/b, but obviously with the other pilot shaft type nut. probably with a savage alloy 3 shoe clutch and flywheel from e bay as they are pretty cheap on there.

http://www.gmmodels.co.uk/acatalog/Ho_Bao_Spares.html

the pinion set part number is 18907 i believe, there is also a 12/16 set - 18908. i think those numbers are right... hopefully they will will work ok with my 43 and 39t spurs - ie, the front wheels might be on the ground once in a while...

let us know what u find out rolland, i wish i had more shops here i could wander round trying out stuff.



Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize


_____________________________

http://homepage.ntlworld.com/robert.palmer97/CEN%20Test%20Pages/Mods%20to%20make%20a%20CEN%20semidecent.htm

(in reply to rolland)
       Post #: 31

RE: .28 in a funfactor? oh dear.... - 6/27/2005 7:28:32 PM   
rolland


 

Posts: 794
Joined: 8/15/2004
From: Tacoma, WA, USA
Status: offline 		Here are the results of this weekends travels. I was primarily concerend with the m12 portion of the clutchbell and replacement bells.
Each one of the parts mentioned I have actually handled and tried, measured, and/or compared. I didn't find any steel pinions that will thread onto the stock bell sorry.
Some of these pinions are to large unless you want to go scary fast. The stock MT2 uses a 3 gear difference (13/16) and the Genesis uses a 4 gear difference(15/19).


These pinion gears will thread on to the m12 portion of the CEN 2 speed bell. Some are to thick and need to be modified or shimmed accordingly.
associated
LXBMC4 Associated Pinion Gear 20T Silver NTC3
LXBMC8 Associated Pinion Gear 21T Gray NTC3
LXBMC5 Associated Pinion Gear 22T Blue NTC3
LXBMC9 Associated Pinion Gear 23T Gold NTC3
LXBMC6 Associated Pinion Gear 24T Red NTC3
LXBMD0 Associated Pinion Gear 25T Green NTC3
LXBMC7 Associated Pinion Gear 26T Black NTC3
LXBMD1 Associated Pinion Gear 27T Purple NTC3
http://www2.towerhobbies.com/cgi-bin/WTI0095P?FVSEARCH=pinion&FVPROFIL=++


hpi
LXFVZ7 HPI Threaded Pinion Gear 15Tx12mm Nitro R40
LXFKG5 HPI Threaded 1st Gear 16Tx12mm R40
LXFVZ8 HPI Threaded Pinion Gear 17Tx12mm Nitro R40
LXFVZ9 HPI Threaded Pinion Gear 18Tx12mm Nitro R40
LXCLR8 HPI Threaded Pinion Gear 18Tx12mm 2-Speed Nitro 3
LXHBK3 HPI Threaded Pinion Gear 20Tx12mm
LXHBK4 HPI Threaded Pinion Gear 21Tx12mm
LXHBK5 HPI Threaded Pinion Gear 22Tx12mm
LXDHM0 HPI Aluminum Threaded Pinion Gear 17T Nitro 3
LXDHM2 HPI Aluminum Threaede Pinion Gear 19T Nitro 3
LXDHM3 HPI Aluminum Threaded Pinion Gear 21T Nitro 3
LXDHM5 HPI Aluminum Threaded Pinion Gear 23T Nitro 3
http://www2.towerhobbies.com/cgi-bin/WTI0098p?&N=N&F=HPIC6607&L=HPIC6972&S1=PINION&S2=&S3=&S4=&C=CLCHPI&V=HPI&I=&G=&U=

http://www2.towerhobbies.com/cgi-bin/WTI0098p?&N=N&F=LXKLT9&L=HPIC6605&S1=PINION&S2=&S3=&S4=&C=CLCHPI&V=HPI&I=&G=&U=&P=

These clutch bells are the same size as CEN's
Associated
LXBMJ9 Associated Lightweight 2-Speed Clutch Bell NTC3
LXBMC3 Associated 2-Speed Clutch Bell NTC3
http://www2.towerhobbies.com/cgi-bin/WTI0097P
Trinity and other manufactureres have an assortment of gears to fit these bells

Losi LST bells (no links sorry)

XTM
149810 MV3131 XTM Clutch Bell No Pinion - Mammoth/X-Terminator Upgrade
http://www.hobbypeople.net/part/14561504.asp
Pinons for these bells
149814 MV3141 XTM First Gear 14T for 2-speed - Mammoth/X-T
149815 MV3151 XTM First Gear 15T for 2-speed - Mammoth/X-T
149816 MV3161 XTM First Gear 16T for 2-speed - Mammoth/X-T
149819 MV3191 XTM Second Gear 19T for 2-speed - Mammoth/X-T
149820 MV3201 XTM Second Gear 20T for 2-speed - Mammoth/X-T
149821 MV3211 XTM Second Gear 21T for 2-speed - Mammoth/X-T
http://www.hobbypeople.net/part/14561504.asp
http://www.hobbypeople.net/part/14561503.asp
http://www.hobbypeople.net/gallery/149815.asp
http://www.hobbypeople.net/gallery/149820.asp
http://www.hobbypeople.net/gallery/149816.asp
http://www.hobbypeople.net/gallery/149821.asp

Ofna 1/8 scale (sorry no links)

HPI
LXM729 HPI Clutch Bell 13T/16T RS4
LXPU15 HPI Clutch Bell 11T/14T 2-Speed
LXM730 HPI Clutch Bell 13T/18T Nitro
http://www2.towerhobbies.com/cgi-bin/WTI0097P
There is mod to make these work because they don't use standard bearings.

You will need part #'s

LXM721 HPI Pilot Shaft M5x27 Black
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXM721&P=7

LXM766 HPI Clutch Needle BB 5x8mm
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXM766&P=7

The old bearings out of your existing clutch bell

You choice of bells
LXM729 HPI Clutch Bell 13T/16T RS4
LXPU15 HPI Clutch Bell 11T/14T 2-Speed
http://www2.towerhobbies.com/cgi-bin/WTI0097P

Diagram of how the clutch bell is assembled
http://www.hpiracing.com/graphics/instr/72516n_2sp/I-72516-P1.jpg

Where the spacers are used use your clutch bell bearings instead.
If it is put on your motor as the diagram says the shaft might be to long for the CEN motor and it is to long for the O.S. motor. The shaft needs to shortened on the part where it threads on to the crank by approx. 1-1.5mm's. If you take your time when you shorten it, it will fit without needing any shimming. I am not recomending this mod for motors that are not using the stock CEN flywheel, because I have not tried it on any thing else. The reason I did this is because they are steel clutch bells in the gearing that I want and my LHS has plenty in stock.

I am sure there are a lot more but this is all I could find and I hope that this information is usefull.



rolland

(in reply to poor judgement)
       Post #: 32

RE: .28 in a funfactor? oh dear.... - 6/27/2005 8:47:14 PM   
poor judgement



Posts: 2065
Joined: 4/16/2004
From: Cleethorpes, UNITED KINGDOM
Status: offline 		holy mother of god, rolland!

werent there any more u could have tried?!?! thats a shedload of info there mate, much appreciated. i have been looking at all of the ones u mentioned there over the last few months, but wasnt sure that they were all m12 or not.

my cen is currently in rally mode so those taller ratios (21t+) are very interesting...

thanks for again for all that info, its certainly of some use here.

_____________________________

http://homepage.ntlworld.com/robert.palmer97/CEN%20Test%20Pages/Mods%20to%20make%20a%20CEN%20semidecent.htm

(in reply to rolland)
       Post #: 33

RE: .28 in a funfactor? oh dear.... - 6/27/2005 9:07:45 PM   
rolland


 

Posts: 794
Joined: 8/15/2004
From: Tacoma, WA, USA
Status: offline 		Sorry that was 8 stores in about a 100 mile radius in a day and a half and for some reason my wife and kids wanted to see me this weekend so I ran out of time.
From what I discovered the m12 portion is pretty much a standard 12mm metric thread that most of the manufacturers use. For steel pinions I would see if a local machinest and make some if a steel version of the one you want is not available.
This shop http://www.1320.4t.com/ makes really affordable custom transmission and spur gears for the X-Factor and Mammoth and pinions for the LST so they should be able to make some pinion gears in any tooth count for the XTM bells or any bell. They can probably make the spur gears as well.



rolland

(in reply to poor judgement)
       Post #: 34

RE: .28 in a funfactor? oh dear.... - 6/27/2005 11:24:56 PM   
poor judgement



Posts: 2065
Joined: 4/16/2004
From: Cleethorpes, UNITED KINGDOM
Status: offline 		it looks like custom made is the only way to get steel ones then... many thanks yet again for ur help rolland!

i have been speaking to a guy who already has the sh.28 in a funfactor, and he has been doing ok on the the stock plastic spurs and stock alloy pinions... thats with standard cen mt wheels too tho.

maybe ive just lost my touch with setting the gear mesh... naaahhh surely not, it was fine tonite for 8 tanks. just concerned that this could be a lot of worry for nothing after all this!!

i will give the local machinists a visit tho, see what they would charge - my brother is quite well in with some cnc guys apparently...

_____________________________

http://homepage.ntlworld.com/robert.palmer97/CEN%20Test%20Pages/Mods%20to%20make%20a%20CEN%20semidecent.htm

(in reply to rolland)
       Post #: 35

RE: .28 in a funfactor? oh dear.... - 6/29/2005 1:19:39 AM   
aj10803


 

Posts: 23
Joined: 6/25/2005
From: pelham, NY, USA
Status: offline 		i know this is out of the conversation. but is the car the same one on your homepage link? i think it is but is it?

_____________________________

he hit the gas and it didn't move... the motor wasn't on.
my best friend on his first use of his new T-Maxx

(in reply to poor judgement)
       Post #: 36

RE: .28 in a funfactor? oh dear.... - 6/29/2005 4:42:05 AM   
rolland


 

Posts: 794
Joined: 8/15/2004
From: Tacoma, WA, USA
Status: offline 		No you haven't lost you touch on the gear mesh. When you think about it there is a lot more rotating mass with the mt tires and even more with maxx wheels and tires.
I really think custom steel ones shouldn't be that expensive. If you think they are to expensive for on or two sets contact all of the UK people on here and make a larger order, that should bring the price way down. Setting a machine up for one or two sets is a pain for a machinest but 10 or 12 sets is more worthwhile. The same would apply to spur gears.



rolland

(in reply to poor judgement)
       Post #: 37

RE: .28 in a funfactor? oh dear.... - 6/29/2005 4:50:06 PM   
poor judgement



Posts: 2065
Joined: 4/16/2004
From: Cleethorpes, UNITED KINGDOM
Status: offline 		yea - i know what u mean rolland, im a draftsman/design engineer by trade, so im fairly familiar with what the cnc guys have to do - nothing a crate of beer shouldnt be able to sort out!

im upgrading my pc at the mo, so dont hold ur breath on this engine installation, the weather here is ****e too, so not a lot of point yet...

aj - yes its the same chassis and .18 engine as in my signature.

_____________________________

http://homepage.ntlworld.com/robert.palmer97/CEN%20Test%20Pages/Mods%20to%20make%20a%20CEN%20semidecent.htm

(in reply to rolland)
       Post #: 38

RE: .28 in a funfactor? oh dear.... - 7/11/2005 9:19:57 PM   
rolland