KH SPIRIT 3 holes cranks 110 / 127 / 150mm

bouin-bouin · 2012-07-02, 09:04 PM

I updated my KH36 with KH disc on SPIRIT cranks and Nimbus D-Brake, but I wanted cranks with 3 holes at 110, 127 and 150mm in order to avoid crank changes as it's not so convenient with the disc on the right crank

As Kris doesn't plan to make such cranks even if no technical issue as forging tool is the same for all SPIRIT cranks, I did my own 3 holes cranks based on 127/150 SPIRIT cranks

Most difficult was to fit the crank at the right position. I used a pedal axis and an indicating caliper fitted to the pillar drill in order to adjust the position. Then drilled gradually to 13mm and tapped holes with 9/16 20TPI RH and LH taps.

Nurse Ben · 2012-07-02, 09:17 PM

Nice job!

Did you do all the work yourself?

Where did you get the taps?

bouin-bouin · 2012-07-02, 10:03 PM

yes by myself
I got taps from WWW.RDGTOOLS.CO.UK, these are not HSS steel but this is enought for aluminum

REF DESCRIPTION QUANTITY PRICE COST
------------------------------------------------------------------------------------------
1214 9/16" X 20TPI CYCLE THREAD 1 £9.13 £9.13
TAP SET

1789 9/16" X 20TPI CYCLE THREAD 1 £9.96 £9.96
TAP SET "Left Hand"

davidp · 2012-07-03, 12:27 AM

Nice work, Didier!

Park Tool also sells pedal taps:
http://www.parktool.com/product/peda...x-20-tpi-tap-6

MadFurai · 2012-07-03, 12:48 PM

Good job. I don't comprehend how you guys can spin a 36 inch wheel with 110 cranks, though. I've never tried it, but it sounds like riding with a Schlumph in high gear...

rvs · 2012-07-03, 05:10 PM

Quote:

Originally Posted by bouin-bouin

I updated my KH36 with KH disc on SPIRIT cranks and Nimbus D-Brake, but I wanted cranks with 3 holes at 110, 127 and 150mm in order to avoid crank changes as it's not so convenient with the disc on the right crank

As Kris doesn't plan to make such cranks even if no technical issue as forging tool is the same for all SPIRIT cranks, I did my own 3 holes cranks based on 127/150 SPIRIT cranks

Most difficult was to fit the crank at the right position. I used a pedal axis and an indicating caliper fitted to the pillar drill in order to adjust the position. Then drilled gradually to 13mm and tapped holes with 9/16 20TPI RH and LH taps.

Nice job.

It will be great if Kris made blank cranks with no holes.
So you can make you own length cranks.
Then i can make cranks with 160mm length.
The length i this is perfect for technical high gear schlumpf muni riding.

svzurich · 2012-07-03, 08:41 PM

Well done, Bouin!

munirocks · 2012-07-03, 09:13 PM

Quote:

Originally Posted by rvs

Nice job.

It will be great if Kris made blank cranks with no holes.
So you can make you own length cranks.
Then i can make cranks with 160mm length.
The length i this is perfect for technical high gear schlumpf muni riding.

160/140/120 would be so cool. That's what I would do.
Or 165/145/125....

bouin-bouin · 2012-07-04, 09:47 AM

Quote:

Originally Posted by davidp

Nice work, Didier!

Park Tool also sells pedal taps:
http://www.parktool.com/product/peda...x-20-tpi-tap-6

David, Park tool taps are just to repare damaged threads, they are no conical enough for a full tap machninig

bouin-bouin · 2012-07-04, 09:56 AM

Quote:

Originally Posted by MadFurai

Good job. I don't comprehend how you guys can spin a 36 inch wheel with 110 cranks, though. I've never tried it, but it sounds like riding with a Schlumph in high gear...

on a 36", 110mm is same as 125mm cranks except at low speed and technical condition; don't worry, I'm not able to ride 100mm cranks on a 29" but 110 on a 36 is just perfect if nice conditions

danger_uni · 2012-07-04, 09:06 PM

Nice work Didier!
I have to admit though - currently I have no plans to offer cranks with no pedal holes. There are just too few people that would be willing/capable of doing the required modifications -realistically no retailer is going to be willing to carry that. Plus, as Didier shows you can always add holes if you have the capacity to do so, and that's not limited on the existing cranks.

munirocks · 2012-07-04, 09:13 PM

Quote:

Originally Posted by danger_uni

Nice work Didier!
I have to admit though - currently I have no plans to offer cranks with no pedal holes. There are just too few people that would be willing/capable of doing the required modifications -realistically no retailer is going to be willing to carry that. Plus, as Didier shows you can always add holes if you have the capacity to do so, and that's not limited on the existing cranks.

Kris, I wish you would consider the potential of something like 163/145(/127 if you did triples) or 160/142(/124) for us geared riders. I would buy two pairs on the spot.
Or alternatively just single hole long ones around 160ish and then people could have their second and or third holes added custom.

danger_uni · 2012-07-04, 09:56 PM

OK, I'll consider it =)

munirocks · 2012-07-04, 09:58 PM

Woohooo, you made my day!!!

rvs · 2012-07-05, 06:20 AM

Quote:

Originally Posted by danger_uni

OK, I'll consider it =)

160/142 if you make them i would buy 2 pair.

2012-07-02, 09:04 PM	#1
bouin-bouin Didier Join Date: May 2008 Location: France in Europe (Le Chesnay - Yvelines) Age: 47 Posts: 338	KH SPIRIT 3 holes cranks 110 / 127 / 150mm I updated my KH36 with KH disc on SPIRIT cranks and Nimbus D-Brake, but I wanted cranks with 3 holes at 110, 127 and 150mm in order to avoid crank changes as it's not so convenient with the disc on the right crank As Kris doesn't plan to make such cranks even if no technical issue as forging tool is the same for all SPIRIT cranks, I did my own 3 holes cranks based on 127/150 SPIRIT cranks Most difficult was to fit the crank at the right position. I used a pedal axis and an indicating caliper fitted to the pillar drill in order to adjust the position. Then drilled gradually to 13mm and tapped holes with 9/16 20TPI RH and LH taps. Attached Images __________________ http://monocycle.info http://teamcdkmonocycle.blogspot.com/ MUNI KH26" & KH29" both with Oracle disc brake, ROAD KH36" with KH dsic on Spirit crank my goal : a 3 geared 29" to have only one uni for all kind of rides :-) Last edited by bouin-bouin; 2012-07-02 at 09:06 PM.

2012-07-02, 09:17 PM	#2
Nurse Ben XC Muni Join Date: Jul 2008 Location: Southeast USA Age: 47 Posts: 3,952	Nice job! Did you do all the work yourself? Where did you get the taps? __________________ I dream of hamsters and elderberries

2012-07-02, 10:03 PM	#3
bouin-bouin Didier Join Date: May 2008 Location: France in Europe (Le Chesnay - Yvelines) Age: 47 Posts: 338	yes by myself I got taps from WWW.RDGTOOLS.CO.UK, these are not HSS steel but this is enought for aluminum REF DESCRIPTION QUANTITY PRICE COST ------------------------------------------------------------------------------------------ 1214 9/16" X 20TPI CYCLE THREAD 1 £9.13 £9.13 TAP SET 1789 9/16" X 20TPI CYCLE THREAD 1 £9.96 £9.96 TAP SET "Left Hand" __________________ http://monocycle.info http://teamcdkmonocycle.blogspot.com/ MUNI KH26" & KH29" both with Oracle disc brake, ROAD KH36" with KH dsic on Spirit crank my goal : a 3 geared 29" to have only one uni for all kind of rides :-)

2012-07-03, 12:48 PM	#5
MadFurai Skateboarder to Marine to Unicycler Join Date: Aug 2011 Location: Central Virginia Age: 42 Posts: 536	Good job. I don't comprehend how you guys can spin a 36 inch wheel with 110 cranks, though. I've never tried it, but it sounds like riding with a Schlumph in high gear... __________________ MadFurai's YouTube channel

2012-07-04, 09:56 PM	#13
danger_uni Kris Holm Join Date: May 2001 Location: Vancouver BC Age: 39 Posts: 1,577	OK, I'll consider it =) Last edited by danger_uni; 2012-07-04 at 09:57 PM.

2012-07-03, 12:27 AM	#4
davidp Registered User Join Date: Jun 2009 Location: Chelmsford, MA Age: 33 Posts: 702	Nice work, Didier! Park Tool also sells pedal taps: http://www.parktool.com/product/peda...x-20-tpi-tap-6

2012-07-03, 08:41 PM	#7
svzurich Registered User Join Date: Apr 2012 Posts: 47	Well done, Bouin!

2012-07-04, 09:06 PM	#11
danger_uni Kris Holm Join Date: May 2001 Location: Vancouver BC Age: 39 Posts: 1,577	Nice work Didier! I have to admit though - currently I have no plans to offer cranks with no pedal holes. There are just too few people that would be willing/capable of doing the required modifications -realistically no retailer is going to be willing to carry that. Plus, as Didier shows you can always add holes if you have the capacity to do so, and that's not limited on the existing cranks.

2012-07-04, 09:58 PM	#14
munirocks money rocks too Join Date: Feb 2008 Location: Freiburg, Germany Posts: 1,829	Woohooo, you made my day!!! __________________ µ-knee Last edited by munirocks; 2012-07-04 at 09:58 PM.

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