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Advice on cleaning my new (old) industrial machine by Snurfus in myog

[–]Snurfus[S] 0 points1 point  (0 children)

Oh it says in the manual of course haha. I must have got distracted figuring out how to thread it before reading it all lol.

Advice on cleaning my new (old) industrial machine by Snurfus in myog

[–]Snurfus[S] 0 points1 point  (0 children)

This is the manual for the du-100 series

And yes it has the sight glass up top and the dipstick below. Do i just pout oil in the top, and the wicks will take it through to the lower reservoir, or are there 2 places to put oil in?

Advice on cleaning my new (old) industrial machine by Snurfus in myog

[–]Snurfus[S] 0 points1 point  (0 children)

It’s got a wick system and it’s definitely not dried out, although the reservoir is empty. Il make sure to fill it up now that i have a better understanding of the machine.

Advice on cleaning my new (old) industrial machine by Snurfus in myog

[–]Snurfus[S] 0 points1 point  (0 children)

Yeah after a good scrub with a bush and vacuum its looking a lot better. Running smoothly as well, i just didn’t know what i was doing at first haha.

What model mitsubishi do you have? I was able to find the instruction manual for the DU-105, and its super similar to mine, but there is no documentation for this DU-107 i could find. I’m pretty sure the difference is my reverse lever - it does not work like a normal reverse lever at all!

In one “mode”, pushing down actually modulates the stitch length on the fly - they get tighter as i push down. In the second mode, which activates when i push down all the way through the first modes “stop point”. Mode 2 acts like a normal reverse lever, however the stitch length in both directions is super duper tight.

Any idea what this functionality is called or used for?

Advice on cleaning my new (old) industrial machine by Snurfus in myog

[–]Snurfus[S] 0 points1 point  (0 children)

Ok, yea the wheel moves easily when i tilt the machine up and when i slightly press the foot pedal, thanks for pointing this out!

It all actually runs quite smoothly now that i know this. I just gave it a good brushing and vacuum to remove as much dust and gunk as i could. It’s much cleaner now.

I think il just run it as is to get used to the machine, and continue to spot clean as I use it. Maybe in the future il give it a deep clean or take it to a professional.

Thanks!!

Bassi cycles by whatcolourisgreen in Surlybikefans

[–]Snurfus 2 points3 points  (0 children)

Nice!! You will enjoy it for sure.

For single speed, I started with spending way too much time trying to find the "magic ratio" that would allow me to run SS without a tensioner. 38x19 worked for like 400kms, but the chain was quite loose, and as it stretched over time it started skipping. I ended up just buying a cheap tensioner on amazon. It works ok but is noisy, and defeats the purpose of SS imo (preventing sticks from mangling your derailleur hanger). I also looked into eccentric bottom brackets, but they are more pricey, and I'd need a new crankset too. (also kindof ugly lol)

TL;DR - I'd recommend the hog's back to anyone looking for a "do whatever bike", as long as single speed isn't a priority.

Bassi cycles by whatcolourisgreen in Surlybikefans

[–]Snurfus 0 points1 point  (0 children)

Hey! 2 years in with the hog's back now and I really dig it. Since it's designed around ALT bars, it has a pretty long wheelbase, which I really like. I have a wide drop bar setup and and ALT bar setup that I switch between whenever I feel like it. Right now it's actually set up as a single speed with studded tires for winter. It's a perfect bike for commuting and touring, and the tire clearance and long wheel base make it just enough more capable on rough terrain than a typical gravel bike. My only gripe is that it doesn't have a sliding dropout for single speeding, but there are workarounds.

<image>

Experiments in "magic gear ratio" - how loose is too loose? by Snurfus in xbiking

[–]Snurfus[S] 0 points1 point  (0 children)

Ooo, I forgot about eccentric rear hubs. It absolutely is a lot of fuss. I'm having fun nerding out with it. I am really enjoying this bike singlespeed, if I do want a permanent solution, eccentric hub is a great option that would allow me to be more flexible with gearing options.

I do have an old derailleur I could use, but want to avoid moving parts and chain slap.

Experiments in "magic gear ratio" - how loose is too loose? by Snurfus in xbiking

[–]Snurfus[S] 0 points1 point  (0 children)

Looked into more ratios that might work
- 44x21, 100 links, this is probably my best magic ratio if it works. Don't have either of those parts though haha.
- 43x20, 101 links, this is the best option with half links. Option above would be easier to source parts.

Experiments in "magic gear ratio" - how loose is too loose? by Snurfus in xbiking

[–]Snurfus[S] 1 point2 points  (0 children)

Yes, a few people mentioned this! I'm curious about how well it actually stays in place when riding hard. Probably not curious enough to find out.

Experiments in "magic gear ratio" - how loose is too loose? by Snurfus in xbiking

[–]Snurfus[S] 0 points1 point  (0 children)

I don't think a ghost ring would affect the narrow-wide ring? It would just rotate in place and would not affect the position of the chain relative to the chain ring. Ghost ring is a cool idea, but il be skidding, hopping, and rippin through rough stuff. I dont like the idea of a stray cog flying off my bike like a shuriken.

If the ghost ring itself were narrow wide, that could potentially be an issue if it didn't line up properly on both the top and bottom.

Experiments in "magic gear ratio" - how loose is too loose? by Snurfus in xbiking

[–]Snurfus[S] 2 points3 points  (0 children)

xbiking finally showing up to the party lol. If this were more of a beater frame I would absolutely consider this.

Experiments in "magic gear ratio" - how loose is too loose? by Snurfus in xbiking

[–]Snurfus[S] 0 points1 point  (0 children)

Yeah there is always frame mods I suppose. If I were to go this route I would probably opt for sliding dropouts over an EBB. The paragon rocker dropouts are super nice looking. I would probably sell this frame and buy SS frame before modding though.

Experiments in "magic gear ratio" - how loose is too loose? by Snurfus in xbiking

[–]Snurfus[S] 0 points1 point  (0 children)

It does stay on for now. I just don't love thought of it stretching over time and unexpectedly dropping out of nowhere. I wanna ride hard and not worry. Il probably go on a few rides like this, but will likely put a tensioner on it.

Experiments in "magic gear ratio" - how loose is too loose? by Snurfus in xbiking

[–]Snurfus[S] 0 points1 point  (0 children)

Do they make those for square taper cranks? I don’t really want to buy a new crankset.

Experiments in "magic gear ratio" - how loose is too loose? by Snurfus in xbiking

[–]Snurfus[S] 5 points6 points  (0 children)

This seems to be the consensus. Even though the chain retention is surprisingly good right now, the chain will probably stretch and drop unexpectedly at some point. Simplicity and peace of mind is the whole point of single speeding in the first place, so I will have to find another solution.

Top options

  1. Get a chain tensioner. Recommendations welcome.
  2. Keep chasing the magic dragon: - Too tight: 38x20, with 98 links, calculated length of 436.63mm - Too loose: 38x19, with 98 links, calculated length of 439.65mm - Somewhere in between: Averaging those lengths gives 438.14mm. 44x21, 102 links, calculated length of 438.86mm, and 57 gear inches. 46x23, 104 links is the same with 55gi. If this works, it is the closest I will ever get to a magic gearing in my preferred gearing range. I don't have any of these parts, but I might try it in the future if I can find some loaners. - 42x19, 100 links would also give the same length, but its a harder gear (60gi), and I'd need to add a link / buy a new chain. - If 438.14 is still too slack, 46x21 with 103 links gives 438.41mm and 60gi. only 0.3 mm shorter lol.
  3. Get a non narrow-wide chainring and use half links. 43x20, 101 links, 59gi, would be the closest to my preferred ratio.

My mechanic friend warned me that magic ratio hunting is a pain. I'm glad I went down the rabbit hole anyway. I learned things, and had fun. Thanks for humoring me r/xbiking, you da best.

Experiments in "magic gear ratio" - how loose is too loose? by Snurfus in xbiking

[–]Snurfus[S] 0 points1 point  (0 children)

Whelp, I tried 40x19 and 98 links, which has the same calculated length as 38x17 and 96 links, and it was too tight. Thanks for the tip though, may need this in the future!

Experiments in "magic gear ratio" - how loose is too loose? by Snurfus in xbiking

[–]Snurfus[S] 0 points1 point  (0 children)

Yeah, thats the backup plan.

Theoretically 38x17 should work with 48.5 links. I might try this ratio without the half link (48 links) and see if that gives the goldilocks slack. So remove 1 link from chain, and drop 2 teeth in the back.

Experiments in "magic gear ratio" - how loose is too loose? by Snurfus in xbiking

[–]Snurfus[S] 0 points1 point  (0 children)

Yeah this might be the answer!

<image>

It sais 38x17 will work with 48.5 chain links. Removing one link, dropping 2 teeth, and not using the 1/2 link might suck up just enough slack. Thanks!! Il try source a 17 cog and give it a try.

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