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Hi to other members and question from newbie!
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tonybsa
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May 6, 2019 - 3:30 pm
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Good afternoon all fellow chicken pilots and enthusiasts.

The family and I have a number of Bantams, all in classic trials trim (sorry purists)  they are all either D14 or B175 motors in a range of chassis.

I am about to embark on two engine rebuilds as both bikes have seen hard use for the last 3 to 4 years in classic trials (testament to the strength and build quality of these little engines).  I had unit 4 stroke BSA before moving to Bantams and the Bantam is a far superior motor in my humble opinion.

However cutting to the chase, rather than remove the motors, my plan is to rebuild 2 other motors and swap them out.

I have managed to source all major parts I need but I am stuck for the Engine and Gearbox circlips, specifically the output shaft bearing circlip, the mainshaft circlip and crankshaft circlip for the timing side and drive side.

I believe the part numbers are:

90-75 mainshaft bearing circlip

90-1621 final drive bearing circlip

90-0075 crank shaft circlip drive side

90-0798 crank shaft circlip timing side

 

Can anyone help or is there an alternative option?

  

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cocorico
Central France
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May 6, 2019 - 5:24 pm
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Welcome to the forum. For circlips, can you not measure the old ones / shafts requiring them? A good bearing factor should be able to supply them. I get quite a lot from ** Please log in to view **, but you may have local ones.

The Bantam Club Forum - all the answers are in there. If not, Google may.

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Peterg
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May 7, 2019 - 9:53 am
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I would check out Rex Caunt and Kidderminster Motorcycles for these parts

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sunny
Norfolk
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May 7, 2019 - 11:01 am
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        welcome    your in  the  rite   place              look  on  the  for  sale   post  iv  a D 14 Trails head  and  covers  going

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tonybsa
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May 8, 2019 - 7:51 pm
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Evening all, thank you for the various replies.

regrettably I have tried all the avenues suggested.  These circlips are much thinner than the standard spec you can buy from a bearing factor.  They are all 0.040" to 0.050" thick, the standard thickness for diameters around this size is 0.062" and they do not fit in the groove.

I have tried the following people.

a number of bearing factors

Rex Caunt - not available

Bournemouth Bantams  - no new stock, is going to try and source me a set of 2nd hand ones.

hawkshaw motorcycles  - not available

Bantam spares - not available

Draganfly motorcycles - not available.

I will keep looking I guess

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johnsullivan
east sussex
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May 9, 2019 - 11:16 am
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namricks may be able to help. ** Please log in to view ** however it reasonably easy to thin to size with patient filing.

67 D10. and a D7    2007 Honda Hornet FA. 93 Yamaha TTR 250 Raid, Sinnis SC 125. 78 Honda 90  75 Montesa Cota 247 an electric scooter of Famous make.

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mcafee
Malton North Yorkshire
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May 9, 2019 - 4:03 pm
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Hi I have used a strong magnet to hold an item such as a shim or circlip and various grades of wet and dry on a flat surface to acheive the correct thickness.All that is needed is patience and a micrometer!

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johnsullivan
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May 9, 2019 - 5:10 pm
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Another use for those little grippers.I pin the things to a board via the ears.last one was years ago though to fix an outboard.

67 D10. and a D7    2007 Honda Hornet FA. 93 Yamaha TTR 250 Raid, Sinnis SC 125. 78 Honda 90  75 Montesa Cota 247 an electric scooter of Famous make.

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Mags 1
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May 9, 2019 - 9:14 pm
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I've got lots of secondhand ones I've stripped off Bantam engines if you want to try a set?

Four now on the road and at least several in bits.

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tonybsa
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May 14, 2019 - 10:24 pm
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Mags 1 said
I've got lots of secondhand ones I've stripped off Bantam engines if you want to try a set?  

yes please, i am sure they will be fine, I am happy to purchase a couple of sets from you.  not sure how we would do the transaction though?

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Mags 1
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May 14, 2019 - 10:47 pm
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I'll have a lok tomorrow and PM you.

Four now on the road and at least several in bits.

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tonybsa
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May 18, 2019 - 10:14 pm
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that would be very much appreciated.

thank you

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Mags 1
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May 24, 2019 - 3:38 pm
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I've PM'd you, a red '1' should be showing in you inbox above.

Four now on the road and at least several in bits.

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