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FAO: CEN RACING. Centre diff for FunFactor?

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FAO: CEN RACING. Centre diff for FunFactor?

Old 09-19-2005, 01:22 AM
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rolland
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

You can get a Ofna MBX R2 for about 180.00. Then put you motor and electronics in it. You can also use your Romulins for a truggy conversion.
http://www2.towerhobbies.com/cgi-bin...&I=LXAXV2&P=02


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Old 09-19-2005, 10:36 AM
  #52  
poor judgement
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

thats a nice price seeing as i have all the bits i need to have it running.

the 1:1 is erm, gonna be an issue for a while now tho im afraid, a piece of trim fell off tonight when i knocked my knee against it - 2 whacking great holes in the shell where there should be some metal... need some cash and fast!!

afraid all my other projects are gonna have to stop for now, will post anything that i do as i do it tho - unless i sell up to fund the 1:1 work...
Old 09-19-2005, 10:57 AM
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

Auto problems are no fun. Hopefully you can fix it with out having to sell anything. I went through the same thing with my wifes car and just ended up buying a new one for her.


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Old 09-19-2005, 11:50 AM
  #54  
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

Yeah I am feeling for you on this mate. We had a succession of problems with the 4x4 and none of them were cheap!
Old 09-19-2005, 05:03 PM
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poor judgement
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

oh no - just cleared the newly reclaimed garage - found a pullstart 2 stroke petrol engine - about 20cc im guessing... hmmmmm [8D]

oh - with a clutch - centrifugal type, but no bell...
Old 09-20-2005, 11:34 AM
  #56  
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

Now THAT is a challenge!!
Old 09-21-2005, 03:54 PM
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

aye - just a bit! maybe ill do it for a laff one day - dont even know if the engine runs but its a nice little motor... made the missus say "oh no, dont even think about it, buster!" lol so i might HAVE to do it now, just to spite her!!

now...what was this thread all about? ah yes...

my ofna centre diff turned up today along with some 1/8 buggy wheels and tyres from a lx pro... i think. the diff looks like it may just squeeze into the twin brake setup i have at the mo - length wise at least. its gonna hit the flywheel tho, so thats gonna need carefully reducing in diameter. as a bit of a brucy bonus the spur is hardened steel and has 46 teeth - which is nice, leaves me a few options for the spur alone (thinking of my mt setup there).

i will take a further look over the next couple of days as i booked em off work, to look at, and sort out, a new 1:1 - turned out to be a bit of a ratter tho...[&o]
Old 09-21-2005, 04:09 PM
  #58  
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

How will a 46t centre diff affect the front and rears? With the CEN diffs being 43 and 13 tooth, is this going to make any difference to the centre? Sorry if this is a dumb question but I have never had any experience of a centre diffed vehicle!!
Old 09-21-2005, 04:28 PM
  #59  
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

i think u are getting mixed up with the 43t bevelled gear in the front and rear diffs and the cen 47t spur gear that fits on the cen diff i used as a centre diff

not sure how to completely explain it without confusing meself!... the centre diff is part of the spur, if u like, as the spur is screwed to the diff casing the diff is driven "locked" with all wheels having equal traction, thereby giving power to the 13t gears u mentioned and onto the 43s etc

basically its no different to having a 46t spur gear on a single speed setup... cos thats all it is, but screwed to a diff
Old 09-21-2005, 04:47 PM
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

Ahhh, I get it, sorry to be so thick. By the way you're not having a clearout of your CEN stuff aswell as your garage are you? (ebay 6000539546)
Old 09-21-2005, 04:59 PM
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

im gonna kill her!!! lol

no mate not mine, but not far off!! watch the bidding on this one, theres a few quid to be made selling that lot off seperately. my moneys on good old lloyd18, hes the man!
Old 09-21-2005, 11:34 PM
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

What about using a larger spur to move the engine away from the diff? You can get an Ofna 12 tooth bell and with a 60 tooth spur the truck would rip. If this is for the .28 truck you could probably get a way with a larger clutch bell.



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Old 09-22-2005, 06:01 AM
  #63  
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

i think a larger spur is going to cause more issues with the linkage between the 2 brake seats tbh. i only need to lose a couple of mm off the flywheel, shouldnt affect the idle too much, i hope... also - the .28 wont pull as high a pinion as i was expecting on the gen spur gears, but like u say, i should have a better chance with the 46t spur.

gotta pull it all to bits and try it out yet tho - and yes, this may well end up in the .28 - not exactly thrilled about the idea of drilling more holes in the jt chassis tho... but its gonna have to be done! the 46t spur looks like it might just clear the chassis without a cutout for it, but i could be wrong, close tho.

it will also mean some work on the alloy brake seats, gonna have to get this spot on or its gonna be a right waste of some nice bits.
Old 09-22-2005, 09:32 PM
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

The center diff for the Mammoth ST is 65 tooth and people race it with a 12-13 tooth clutch bell with no problems so I'm sure the MT2 can run it also, but like you said clearance to the chassis might be a problem.

Before you go ginding and drilling the JT chassis wait to see if the company you mentioned is willing to take you up on your offer about the towers and chassis. Or maybe even wait until you can afford a kit like the Ofna R2 and use the JT chassis for the OS engine.

I believe that Ofna has a center spur with a sliper clutch built into it. I have seen one but I'm not sure who made it.


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Old 01-01-2006, 09:51 PM
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

seein as it was all ready to go, minus a few bits, ive stuck it all back together. well... nearly all.

i know its not quite complete, but man, its so much lighter then my mt. and im gutted that i cut the arches to suit spiked tyres... but nevermind, it will be up and running soon. got a 21t genesis pinion on the 47t spur - see how that works out.

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Old 01-02-2006, 09:50 AM
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

well good luck
Old 01-02-2006, 03:22 PM
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

PJ...you have WAY too much time on your hands man!!! Buy a buggy!!!! [:-]
Old 01-02-2006, 04:02 PM
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

says the man with the fancy top plates... lol.

would love to, but i cant justify the cash, too much other stuff goin on mate. one day... one day lol
Old 01-02-2006, 08:26 PM
  #69  
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

PJ..looks neat... I like your creativity... I have a buggy and a truggy and I love both of them...
Old 01-04-2006, 11:48 AM
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

PJ, just noticed your post in the Matrix thread. The diff oil set up is a bit of a tough one for the Fun Factor. It kind of depends on which engine you are planning on using in the truck. If you will be using a small block, I would go for a set up similar to a 1:8 buggy. Something like 5k front, 7k centre and 1k rear. If you will be using the .28 then a truggy set up may be more appropriate. Say 10k front 30k centre and 5k rear. The centre diff weight is to prevent the front wheels unloading and ballooning the tyres as the weight goes on the rear tyres inder acceleration. Obviously the bigger the engine, the greater the likelyhood of the front wheels picking up. Hope that made some sense.
Old 01-04-2006, 02:08 PM
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

nice one cheers for that, just what i was after mate.
Old 01-05-2006, 07:09 PM
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

Have you had a chance to run the new project yet? Cant wait to hear how it goes.
Old 01-13-2006, 09:35 AM
  #73  
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

right - i kicked its arse today, but got stuck with a lack of fuel tubing and a carb linkage... lhs shuts soon, best go see what they got...

heres what i have chucked together... what zipties? where?

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Old 01-13-2006, 11:48 AM
  #74  
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

Nice!! You know I am surprised that CEN didn't think of updating the new FF this way. The changes they have made seem pretty low key. Thay could have totally wiped the floor with the opposition in the handling stakes if they had done some of the stuff that the owners are trying on the old FF. Makes you wonder how much notice is taken of the progress and improvement being done OUTSIDE the CEN research and development room. Good work PJ, let us know how it goes.
Old 01-13-2006, 09:14 PM
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Default RE: FAO: CEN RACING. Centre diff for FunFactor?

truck looks great!, must be fast

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