Spur gears ??

[J_WOODY]

is anyone else having problems with spur gears stripping? i've stripped 5 so far, and at first i thought the motor clamp hadn't been tight enough and the motor had moved, but i've since moved from buttonhead to caphead screws on the motor clamp to get them really tight, but its still happened
what i noticed this time, is that the slipper has got really hot, and after its stripped the spur, it looked like it was no longer sitting dead center... on closer inspection after removing it from the car, i've noticed that the center of the spur has melted out of shape, what i want know is, are there any alternatives to the schumacher spur gears?

thanks Jay

[footey]

hi yes theres a few running AE spur gears most are running 81 u do have to reamer the centre hole bigger

[ben]

Im now running an associated spur. (81)
The schumacher ones seem quite brittle. All you have to do with the associated ones is ream the hole bigger in the middle. I find that if you make the hole so it just goes to the edge of the raised bit it is a nice fit. Make sure you drill the hole straight though!

Ben

[footey]

beat u to it lil ben :p

[MattADH]

I know one guy who was regularly stripping spurs reset his slipper clutch properly and hasnt had a problem since. He had checked his mesh, made sure everything was tight and re-aligned the pinion.

I think if the slipper is too tight, the spur gear's teeth is the next weak link...

[ben]

Shane.. it would appear you've caught the wrong keys and put x11 instead of SX in your sig line :woot:

[J_WOODY]

Thanks guys, i think i'll make the switch to Associated spurs...
and even better, they're a lot cheaper than schumachers:thumbsup:

Jay:thumbsup:

[Chrislong]

Hi Jay,
Do ensure it isn't slipping excessively, it doesn't take much to melt any brand of spur. ;)

[chris68nufc]

Have the SX spurs shot up in price?? Ive just paid £8 for mine.Im sure they were cheaper when i first got my car??

[MattW]

If your slipper is hot and you've melted the centre, then your slipper is far too loose. Have seen this a bit in fairness. If you get everything set right then it should all be fine. I did use AE ones when we ran out during last summer. You can use them, but it's not ideal as it's very difficult to get the hole to the right size and perfectly centre.

[PaulUpton]

i stripped one first time running car but had one on now for months, i mesh mine a little tighter than i would normally

Paul

[Darren Boyle]

Have the SX spurs shot up in price?? Ive just paid £8 for mine.Im sure they were cheaper when i first got my car??
Yes Chris a lot of the spares all went up from Schuey about two months ago now, gradually these prices are coming through as older stock at lower prices runs out now (this is the case with us anyhow)

[B&H Racing]

Don`t suppose anyone knows the exact reamer size ?

cheers

[ThePromise]

Don`t suppose anyone knows the exact reamer size ?

cheers

Hi, the hole must be 8mm in diameter. Looks like this:
http://www.rc-car-setup.com/index.php?p=reviews&id=30&seite=7

Greets, Chris

[Chrislong]

And its got to be perfectly central.

Personally ive never had a problem, but I do like my slipper to work so little it can hardly be detected. I think it'll slip 1-2ft maximum for me, and thats only to protect the belts otherwise id just lock it solid.

[Mike Hudson]

£8 for a spur gear!!! :o:thumbdown:

[Chrislong]

£7.53 SX Spur
£3.67 B4 spur

Your right. Both in stock at JE spares.

To change to the B4 spur do we need to change to B4 slipper pads or are they same as SX? They look the same to the eye, I don't have them in-front of me to measure.

£6.50 B4 slipper pads

[J_WOODY]

£7.53 SX Spur
£3.67 B4 spur

Your right. Both in stock at JE spares.

To change to the B4 spur do we need to change to B4 slipper pads or are they same as SX? They look the same to the eye, I don't have them in-front of me to measure.

£6.50 B4 slipper pads
i changed slipper pads aswel, theres a slight difference in size

[ben]

But are the schumacher spur gears expensive?

X-Factory XF5506 111 tooth spur gear - black (X5)http://www.dms-racing.com/images/ic_new.gif £13.95

Do the math.. :thumbsup:

[Mossy]

You can run associated pads, they just need filing slightly on each side. I only ran them once when i ran out of Schumacher pads.

As for the spur gears, I stripped 1 at Southport national and that was pretty much it. I know Matt did alot more in testing, but i guess that was his dodgy meshing lol.

Si

[MattW]

Oi!

You're right though, i did a few. Was a combination of things, the motor clamp in the car at that time wasn't quite as it should have been!! i.e it had been hand modified!! once we put a proper one in it, problem gone. In fact i'm not sure i did any after that.

Also, a lot of the gears we had at that time were a little suspect - because they were samples.

Conclusion -everything as it should be, and no problems!!!

But if you really want to put B4 gears on it, yes you need to use B4 pads - and b e very good at opening the hole up centrally.

[Darren Boyle]

But are the schumacher spur gears expensive?

X-Factory XF5506 111 tooth spur gear - black (X5)http://www.dms-racing.com/images/ic_new.gif £13.95

Do the math.. :thumbsup:

Yes they are Ben so are ours even more so, but I dont see a thread around about poeple stripping our spurs at present...........

One gear, not stripped, race finished - £13.95.......

One gear £7.99, stripped, didnt finish race, second gear another £7.99 = £15.98 plus one race not finished... ;)

Now Do The Math Benjamin :p ....... LOL

[ben]

Dear they may be Ben, but I dont see a thread around about poeple stripping our spurs at present........... ;)

Dear Dms racing,

still nearlly twice the price though :blush: Maybe i could start a thread?:eh?:

Regards,

they may be ben :thumbsup:

[ThePromise]

Oi!

You're right though, i did a few. Was a combination of things, the motor clamp in the car at that time wasn't quite as it should have been!! i.e it had been hand modified!! once we put a proper one in it, problem gone. In fact i'm not sure i did any after that.

Also, a lot of the gears we had at that time were a little suspect - because they were samples.

Conclusion -everything as it should be, and no problems!!!

But if you really want to put B4 gears on it, yes you need to use B4 pads - and b e very good at opening the hole up centrally.

Hello,

there's no need to use the B4 pads. The original pads work well with the Associated spurs.

Best, Chris

[MattW]

Yes and No, Yes they will fit, No they won't work properly!!

Because they are effectively "smaller" i would be very surprised if they don't move around on the spur gear and cause some very strange slipper action. Maybe i'm wrong, but i wouldn't (and didn't when i ran AE spurs) run them personally.

[ThePromise]

I've been running the original pads with AE spurs ever since I got the car, never had any probs...

[Swiss]

I have been using the original spur gear since getting the car, no prolems at all....

Bit like the discussion on here with regards to the bands on the wing, first one snapped last week.... after running the car for X months?? Don't see a problem with either.

[DomRC]

Time to resurrect an old thread... ran my new Cat S1 at the track for the first time today, and stripped the teeth off my spur after 2 laps at speed...bits of plastic shavings all over the inside, and the pinion eventually spinning freely

I have a spare schumacher spur (as I'd read this thread before!) so would prefer to get it right with that one rather than reaming an AE one...

As the S1 comes pre-built, I would have assumed the slipper would have been ok, or is that not the case? I'm pretty sure the motor was nice and tightly in position too.

Does all of this mean I just need to get the pinion meshed into the spur more? I have it 'semi-meshed' with my Losi, but I saw that someone had suggested getting it 'unusually' close with the Cat. Otherwise do I need to be tightening or loosening the slipper?

Help?! :confused:

[Mossy]

Wont be an issue with the slipper i wouldnt of thought. Would check that the motor is square in the clamp - if its slightly off centre it can cause the spur gear to slip. As for meshing, it doesnt really need to be too tight. I mesh it fractionally tighter than my b4, but not much.

If you continue to strip spurs, check the bearings on the layshaft. If these fail it can cause the spurs to go.

Si

[DomRC]

Just to clarify - when people have been complaining about stripping spur gears in this thread, do they mean the teeth, or the damaging the middle of the spur and causing it to move (i.e. due to slipper problems)?

Doesn't look like I have a problem where the spur attaches as I'm pretty sure its sitting in the right place still - will check tonight. If the spur is definitely firmly in place, does that mean it can only be a wonky motor as Mossy suggests or could anything else cause it??

[stegger]

From my experience it was due to the slipper incorrectly being set, heating up and deforming the centre of the spur ;) which then ment the spur become unmeshed :cry:

[mikeyscott]

I heard RW Racing were doing SX spurs. Might be worth giving Neil a shout?