RE: .28 in a funfactor? oh dear....

RE: .28 in a funfactor? oh dear....
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All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> CEN Racing >> RE: .28 in a funfactor? oh dear....

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RE: .28 in a funfactor? oh dear.... - 8/14/2005 10:31:12 AM

Scouser

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From: Liverpool, UNITED KINGDOM
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Its not so much the shafts as the hubs themselves. If you have a look on this link, scroll down and check out the hub set up. Reckon that'll go into the CEN arms? http://www.three5models.co.uk/hyper_7_pbs.htm
The only reason I ask is, I've just got another FF from ebay and I am planning on using it for the big block. Just figured may as well try the big wheels to match!

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CEN Fun Factor, GS SUT Pro, AE RC10 B4, Hotbodies D4
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Post #: 176

RE: .28 in a funfactor? oh dear.... - 8/14/2005 11:58:42 AM

poor judgement

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From: Cleethorpes, UNITED KINGDOM
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they look like they might go on the cen, but, ur gonna need shafts to fit the bearings that the hubs use! u hoping the tmaxx shafts will work? surely not sticking with the cen shafts are u!?!?

those hubs have the offset at the top that the tmaxx ones dont have. so that should give more adjustability than i have on mine - well spotted mate, looks possible.

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Post #: 177

RE: .28 in a funfactor? oh dear.... - 8/14/2005 12:56:59 PM

Scouser

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From: Liverpool, UNITED KINGDOM
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If they go on, I was thinking about getting some 'custom' shafts done. They look promising because they will allow me to continue using the stock FF arms.

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

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Post #: 178

RE: .28 in a funfactor? oh dear.... - 8/14/2005 12:59:18 PM

poor judgement

Posts: 2065
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From: Cleethorpes, UNITED KINGDOM
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as always mate, keep us updated on ur progress. especially the prices of custom shafts...

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Post #: 179

RE: .28 in a funfactor? oh dear.... - 8/14/2005 9:19:15 PM

rolland

Posts: 794
Joined: 8/15/2004
From: Tacoma, WA, USA
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Here is what I've got so far. Power Racing Swift CVJ's, nuckles, and the associated hardware.
The Swift CVJ's are approximately 1mm longer that the stock CEN CVD's and the pillow balls will screw into the CEN arms with some effort. So far every thing is lining up ok with one exception, diff cups. I modified the Swift cups to fit in the CEN diff but the cups a 12mm in diameter versus the CEN's 10mm. They are also considerably longer. So the arms have very limited movement and they would be to weak if I clearanced them.
What I need to do is find a diff cup that I can use that will allow full movement of the arms with minimal clearancing that the Swift shafts will fit in.
The reason that I am going this route is so I can use Romulins without the hex adapters and have a choice in buggy wheels and widening options.

It might even be possible to use Ofna shafts and nuckles but the same diff cup problem will have to be sorted out.

When I have it sorted out I will try to get pics and write some clearer details of the process.

rolland

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Post #: 180

RE: .28 in a funfactor? oh dear.... - 8/14/2005 9:57:37 PM

digout

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Joined: 11/11/2004
From: , TX, USA
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Here are some pics of my big block .21/.28 Fun Factor. It has an Ofna engine with Savage header, cut U MT2 manifold, Pirate 10 pipe/fuel tank/tires and Cen big block engine mounts. I ran it today for the first time and actually did not break anything. All I can say is that the .28 fun factor is a wild ride when it hits top speed.

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Post #: 181

RE: .28 in a funfactor? oh dear.... - 8/14/2005 10:22:58 PM

poor judgement

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lookin very nice and tidy digout. out of interest what clutch and gear ratios are u running in there? 2 speed?

word of warning - i had the rear mounted battery box, and i founs that wheelies would sometimes rip the lid off, leaving the batts dangling out the back!

yea, its all a bit quick with a big block eh?

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Post #: 182

RE: .28 in a funfactor? oh dear.... - 8/15/2005 3:33:26 AM

digout

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The gear ratios are 11/14 for the clutch bell and 44/47 for the spurs. These gears work well for the tall Ofna Pirate P10 tires. I would rather use the single speed set-up knowing how the 2spd shift pin break so easily. You are right about the wheelies and the battery box. I may have to reinstall the all-in-one P10 battery/receiver box. If things start breaking, I plan on going back to the .15 rear exhaust big block or OS 18 CVRX set-up for cvas/axle longevity.

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Post #: 183

RE: .28 in a funfactor? oh dear.... - 8/15/2005 2:27:04 PM

Scouser

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rolland, there may be a solution. I am currently trying to get CEN part number USPS13 to fit through the FF diffs. The part comes from one of the on-road cars I think and it is big enough to accept Savage drive shafts. It is also the exact same design as stock FF diff cups. The only small snags that I have are that the need to recess further into the diff casing and also, they require a bit of trimming of the upper hinge pin mount and the very bottom of the shock towers. This is to give clearance for free movement of the diff cup. All I can say is that it is a VERY close match. I am also looking at the possibility of one of the on-road diff gear housings may fit, thus allowing the diff cups to recess fully.
EDIT...Don't know why I didn't check on this before. It would appear that the part I have is discontinued so availability is sketchy at best. Gutted really, these things are really close to solving the diff cup problem. Ah well back to the drawing board.

< Message edited by Scouser -- 8/15/2005 3:04:45 PM >

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Post #: 184

RE: .28 in a funfactor? oh dear.... - 8/15/2005 4:49:18 PM

poor judgement

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digout - surprised to hear u stuck with the standard ratios, must be very lively off the line! i have been running the genesis spurs - 43/39 with either a 14 or 15t pinion, single speed only ie 1st gear. unfortunately the resistance/weight of the tmaxx wheels means my .28 eats the plastic spurs too easily. alloy pinions die quick on those spurs too. how are u getting on with the plastic spurs?

is the 2nd gear pin a real problem for breakages? i havent tried 2nd yet with the .28, but that point did concern me, as i was planning on using some steel 11/14 ofna pinions for the time being, see how they go.

as for the cv shafts, did u see what i did with mine? seem to be holding up reasonably well with the .28, but are showing some signs of wear now.

quote:

If things start breaking, I plan on going back to the .15 rear exhaust big block or OS 18 CVRX set-up for cvas/axle longevity.

aye, same here, but only the 18 is available to me. ah well - it will have to do! oh - and how does the .15 rear exhaust compare to the .18?

still cant believe how clean and tidy ur truck is, mine has had a hammering!

scouser: maybe worth asking cen about stockpiled discontinued parts..?

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Post #: 185

RE: .28 in a funfactor? oh dear.... - 8/15/2005 8:26:42 PM

rolland

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I shortened the Swift diff cups 4mm and rounded over the cut ends. I also had to clearance the bottom of the shock tower. The slot in the MT2 diff cups is about 7mm and the one on the Swift cups is 12mm so I made the slots in the Swift cups the same length as the ones for the MT2.
After the modifications to the diff cups and shock towers everything works and has plenty of clearance.
So, now I have 17mm hexes on the front with cvj's and diff cups that will not break as easily, if ever. Now I have to do the rear.

Poor Judgement, your half shaft solution is great and I was going to do it until I found the Swift parts. Now I don't have to use the adapters for the Romulins or change the lower shock mount. Also, have you seen the amount of buggy tires available?. I also can get different wheel hexes in different lengths to change the width of my truck by using off the shelf Ofna parts. For somebody that is not really interested in seriously modifying some parts or have the tools to do so I highly recommend you mod.

Scouser, CEN posted awhile back that they will always stock parts for discontinued kits.

rolland

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Post #: 186

RE: .28 in a funfactor? oh dear.... - 8/16/2005 12:52:30 AM

poor judgement

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sounds very nice rolland - any chance of some pics and a run down of what u did?

thinkin about it, my lhs had a couple of swifts in... so he must be carrying spares...

keep us informed on this one - need pics! - my plastic shafts aint gonna last forever!

< Message edited by poor judgement -- 8/16/2005 12:57:45 AM >

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Post #: 187

RE: .28 in a funfactor? oh dear.... - 8/16/2005 4:25:24 AM

rolland

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I will post a more thorough report when I have it completed, but so far everything is working really good.
I read on another forum that the Swift can use Ofna and Kyosho buggy axles so those might be a possibility also since the Swift might be discontinued.

rolland

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