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Douglas Anderson's Road Legal Cyclecar Journal

minitici Douglas Anderson

Home Page: Douglas Anderson   GBR
Dunfermline, Fife, UK
Total Posts: 10 Latest Post: 2017-02-17
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Alternative Wheels And Tyres

Douglas Anderson   GBR — Posted on The CycleKart Club
Friday February 17, 2017 8:05 AM


Honda ANF125 Front wheels with disc rotors

Honda ANF125 Front wheels with disc rotors

from cad model of front wheel tyre

from cad model of front wheel & tyre




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Member Comments on Journal Entry: Alternative Wheels And Tyres   ↵
2017-02-17 08:11:19 # 40395
Comment by Hugh Fraser
Hi Douglas, After much searching i too wentt for ANF wheels as seems to be more common than the c70/90. So far have three with tyres for 125 so in budget. Have opetd for 4 rears though with a 4 bolt hub o 25mm kart spindles up front, rear axle to be determined as 25mm seems scarce in used form, where as 50mm seem more prolific.
2017-02-17 08:19:52 # 40397
Comment by Douglas Anderson
Hi Hugh, 25mm axles with 6mm key ways full length (half on one side half on other) are available from Gemini Kartshttp://www.geminikarts.co.uk/shop/Product.asp?PID=1023&GID=8&SID=9198646&SPIN=8665I will be using one of these on the rear of my kart. I will fabricate my own keyed hubs to bolt to the disc rotor mountings on the ANF125 front wheels - I think this should be easier than modifying rear wheels.
2017-02-17 15:29:11 # 40402
Comment by Zoran R. P.
Hello Douglas, I shall follow your project with interest and even more when you started one street-legal! Ciao, Zoran

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DIY Springs

Douglas Anderson   GBR — Posted on The CycleKart Club
Sunday February 5, 2017 2:09 PM


2

2

3

3

4

4




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Dual Freewheel Differential Progress

Douglas Anderson   GBR — Posted on The CycleKart Club
Monday April 11, 2016 4:04 AM


shaft1

shaft1

Sprocket mounting flange

Sprocket mounting flange




Member Comments on Journal Entry: Dual Freewheel Differential Progress   ↵
Rated 10 out of 10 based on 1 ratings
2016-04-11 15:47:23 # 33711
Comment by Zoran R. P.
Rating: 10/10
Douglas, excellent idea and realisation! Regards, Zoran
2016-04-12 15:27:25 # 33735
Comment by Bryan Dickerson
I wish I understood how this works but it sure looks cool! Do you have any drawings or an explanation?
2016-04-13 02:53:51 # 33746
Comment by Douglas Anderson
Zoran, the idea was not mine - this system has been used on various velomobiles and trikes and has also been suggested on this forum in the past.Bryan, I have some more information on how the unit operates on my web sitehttp://chaindrivediff.co.uk/news/dual-freewheel-drive-for-low-powered-vehicles/Regards, Douglas.
2016-04-13 02:55:41 # 33747
Comment by Douglas Anderson
Oops! the web site url picked up the last bit of text I typed!http://chaindrivediff.co.uk/news/dual-freewheel-drive-for-low-powered-vehicles/
2016-04-13 08:58:39 # 33754
Comment by Zoran R. P.
Douglas, doesn't mater for old and used idea, important is proper construction and installation for your use! Anyway, nothing much new in the world of mechanical components could be DIY made for CycleKarts, or any light motorised vehicles... For your style of driving - with lifted inside wheel - not any problems with such double-free-wheel differentials: you should still have full torque force on outside wheel, which is good! For pensioner style of driving - inside wheel should have more torque at curves and corners, but with small power and low speeds - not so important! Real limited differentials should be the best - but to heavy, too complicated installation and too expensive for small modest cars? Regards, Zoran
2016-04-13 15:48:43 # 33769
Comment by Bryan Dickerson
Thanks Doug,So just to be clear: These mounted on the ends of a solid axle would give you two wheel power in a straight line, a differential effect in corners, and in racing situations would transfer power to the outside wheel thus making it more controllable with the throttle in a drifting situation - correct? When you let off the throttle you'd coast, right? Do you think they'd stand up to 7-12 horsepower in rough cyclekart racing situations (rough ground and heavy side loads)? Does a Honda 90 wheel bolt right up? Sorry for all the questions but this seems like a great compromise for CKs.
2016-04-14 02:19:46 # 33777
Comment by Douglas Anderson
Hi Bryan, The 'differential' fits to the middle of a split rear axle not to the outer ends. My picture only showed one of the two halves of the axle.The durability and torque handling of this unit still need to be proved in use.As it uses bicycle freewheels, I suspect that it may struggle with a 6.5 HP motor.The unit is really intended for human powered or electrically assisted vehicles.The plus side is that the freewheels are cheap and easy to replace.

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Dual Freewheel Diff Progress

Douglas Anderson   GBR — Posted on The CycleKart Club
Wednesday April 6, 2016 5:46 AM


6mm keyways cut in bosses

6mm keyways cut in bosses

rear1

rear1

front1

front1




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Dual Freewheel Differential

Douglas Anderson   GBR — Posted on The CycleKart Club
Saturday March 19, 2016 4:46 AM


20 tooth BMX style 1 2 x 1 8 freewheels and threa

20 tooth BMX style 1/2 x 1/8" freewheels and threaded hub

Freewheel threaded onto hub

Freewheel threaded onto hub

Axle in hub

Axle in hub

Dual freewheel rendering

Dual freewheel rendering




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Member Comments on Journal Entry: Dual Freewheel Differential   ↵
2016-04-03 09:31:41 # 33525
Comment by Keith G
How is this coming along, and do you plan to make a few to sell? PM. Im interested.
2016-04-06 07:24:54 # 33589
Comment by Douglas Anderson
Getting there slowly!

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Chain Drive Differential Axle

Douglas Anderson   GBR — Posted on The CycleKart Club
Wednesday August 6, 2014 5:36 AM


Complete chain drive differential axle

Complete chain drive differential axle




Member Comments on Journal Entry: Chain Drive Differential Axle   ↵
2014-08-06 05:59:49 # 19527
Comment by ian w
Nice machine work there Doug .The only thing im thinking is the lack of oil capacity in the unit . Regular oil changes would be prudent
2014-08-06 06:15:27 # 19528
Comment by ian w
ignore my comment about the oil i just seen the grease nipple .
2014-08-06 06:29:42 # 19529
Comment by ian w
Have you considered putting a vent in the unit ?
2014-08-07 02:51:49 # 19549
Comment by Douglas Anderson
The unit runs with a bentonite based grease, it is not fully packed with grease therefore has some airspace for expansion.

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