Raleigh Roker Comp components question?

Zurichman wrote:

As far as what is the beefiest tire I think I could get on it. I just went out and measured. I still have the stock tires/wheels on it and they are the Clement mso 40 mm. I measured a 1/2" clearance on both sides yet but don't know what that means in tire size I could still go up. Did you read the article over at gravel cyclist on the Raleigh Sport JOM built up and if I am remembering right got it down to 17 something lbs.  Had I had it to do over again I might have bought the 2 gearing Sport. It does weigh 2 lbs. heavier from stock though than mine and I shouldn't have to spend as much money to get my bike below 20 lbs(weighed 20 lbs 12 oz. with the wheel reflectors on and front and rear reflectors removed no pedals and a heavier Brooks saddle installed instead of the light weight stock one and a Garmin GPS mount installed) just another set of wheels should get me there. If you are thinking of buying one you better pull the trigger as I don't know how many they have left anymore. Probably give a ride report on Thursday night or the weekend.

Thanks for the info on the tires.  I'm still trying to buy a 60cm Roker.  I thought I had one but it fell through. Was going to get a DB Haanjo but the fit and geometry of the Roker is much better for me.  You're right in your assessment on availability.

Calculating max tire size of a 40mm tire with 1/2" (12.7mm) spacing on each side of the tire.  

12.7mm - 3mm = 9.7mm
9.7mm * 2 = 19.4mm
40mm + 19.4mm = 59.4mm 

The above is using the max tire size calculation from:
https://janheine.wordpress.com/2013/03/12/how-wide-a-tire-can-i-run/

To calculate your maximum tire width, start with the smallest clearance between your existing tire and bike.

Then deduct the minimum clearance, 3 mm, to get the existing available clearance for your wider tire. Multiply this by 2 (you have that much room on both sides of the tire), add the current tire width, and you get the maximum tire width.

However IMO a 3mm gap is overly optimistic, but it does seem a 45mm tire will still have significant room for mud.  I also think you'd find insufficient clearance in other places if trying to fit a 60mm (2-3/8" wide tire).

Thanks,
Greg

NoCoGreg wrote:
Thanks for the info on the tires.  I'm still trying to buy a 60cm Roker.  I thought I had one but it fell through. Was going to get a DB Haanjo but the fit and geometry of the Roker is much better for me.  You're right in your assessment on availability.

Calculating max tire size of a 40mm tire with 1/2" (12.7mm) spacing on each side of the tire.  

12.7mm - 3mm = 9.7mm
9.7mm * 2 = 19.4mm
40mm + 19.4mm = 59.4mm 

The above is using the max tire size calculation from:
https://janheine.wordpress.com/2013/03/12/how-wide-a-tire-can-i-run/

To calculate your maximum tire width, start with the smallest clearance between your existing tire and bike.

Then deduct the minimum clearance, 3 mm, to get the existing available clearance for your wider tire. Multiply this by 2 (you have that much room on both sides of the tire), add the current tire width, and you get the maximum tire width.

However IMO a 3mm gap is overly optimistic, but it does seem a 45mm tire will still have significant room for mud.  I also think you'd find insufficient clearance in other places if trying to fit a 60mm (2-3/8" wide tire).

Thanks,
Greg

Out of curiosity I tried a Specialized Renegade 1.95 (2.1" or 53.6mm actual) on my Roker Comp.  Doesn't fit in the front or rear.  In the front there's basically zero clearance, just barely touches.  In the rear there's maybe 2mm of clearance at the seatstays and zero clearance at the chainstays.  45mm is as big as I'd go.    

squak wrote:Out of curiosity I tried a Specialized Renegade 1.95 (2.1" or 53.6mm actual) on my Roker Comp.  Doesn't fit in the front or rear.  In the front there's basically zero clearance, just barely touches.  In the rear there's maybe 2mm of clearance at the seatstays and zero clearance at the chainstays.  45mm is as big as I'd go.    

Squak - thanks for checking.  From that a set of tires that measure (not to be confused with the specified width) 45mm will certainly fit both front and rear - it just becomes a question of how much clearance one wants for mud.  Since I seldom encounter mud I'm fine with about 4 to 5mm.

On another note - I just got a confirmation email from Erik's Bike Shop they're shipping a 60cm Roker Sport today.  Woohooooo!!!! :-)  Oh, and they did promise to remove the RD prior to shipment so hopefully I won't need a replacement hanger to get out and ride.

NoCoGreg wrote:
Squak - thanks for checking.  From that a set of tires that measure (not to be confused with the specified width) 45mm will certainly fit both front and rear - it just becomes a question of how much clearance one wants for mud.  Since I seldom encounter mud I'm fine with about 4 to 5mm.

On another note - I just got a confirmation email from Erik's Bike Shop they're shipping a 60cm Roker Sport today.  Woohooooo!!!! :-)  Oh, and they did promise to remove the RD prior to shipment so hopefully I won't need a replacement hanger to get out and ride.

Congrats on becoming a Roker owner NoCoGreg.  Lol on asking them to remover the rederailleur as we don't need any more discussion on whether to straighten the RD or get another one from Raleigh. lol

Zman

Zurichman wrote:

Congrats on becoming a Roker owner NoCoGreg.  Lol on asking them to remover the rederailleur as we don't need any more discussion on whether to straighten the RD or get another one from Raleigh. lol
Zman

It's official - the good folks at UPS just delivered the Roker. Wish me luck that it goes together without issue tonight so can hit some gravel tomorrow.   Today was sunny and low 40's so recent the snow is nearly gone and the roads should be in great shape. Woohooooo!!!

Greg

NoCoGreg wrote:
It's official - the good folks at UPS just delivered the Roker. Wish me luck that it goes together without issue tonight so can hit some gravel tomorrow.   Today was sunny and low 40's so recent the snow is nearly gone and the roads should be in great shape. Woohooooo!!!

Greg

Big time congrats NoCoGreg. Hope it goes together like a breeze or tailwind. lol It's is really cold here around 14 deg. F right now. Couple that off with them really salted the roads heavy I can't get myself talked into taking my bike out in all that salt. Look forward to your ride report here.


Zman

Roker Comp ride#2

73 deg. F here today so yeah it's time to get the first ride in for the year. First I have to find my cycling shoes/set bag that has the big tire in it and get the bento box mounted on it Time to ride. May as well go big or stay at home. So why not climb the local mt. that always kicks my butt. First ride of the season indoor or outdoor. Probably only miss about 15-20 shifts going out. The mt. is 3 miles @ 7-8% slope constant. They did major road repair on it around hunting season I was told. Pretty much all the washboard ruts are gone and really pretty smooth. I stopped once about 1/2 mile into the climb. From there just put it in granny and grind. Every have one of those rides where the wind is in your face and the same going back. This ride was kind of a new one for me on gravel. Since we had a 3-5" snow last Sat. and so the road was still wet and because it is very sandy it was sticking to my tires on the climb causing resistance and just slowing me down some more. I was super pleased with the Roker tonight. I did seem to learn the shift on the way home and only missed about 10 gears or so. The bike seems to have attitude so i left it know one thing straight up. If you don't cooperate you will be staying home. After tonight's ride I have no planes on switching to Shimano 2x. Thanks for shifting tip drwelby. I guess that is all for now but don't know when I felt more alive on the bike than tonight in quite some time.

The Roker was awesome on the climb tonight.

Zman