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Fred Whitton – Garmin battery life……

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  • March 28, 2017 at 11:28 am #26943
    slowclimb

    I am doing the Fred Whitton in a few weeks ansd apart from the normal fitness etc panicking the other thing that is pathetically stressing me out is whether my Garmin will last the ride?…

    Its an 810 and I am guessing if I dont have it linked via Bluetooth to my phone that should save a bit of battery life, does anybody have any other tips about how to make it last the duration (which may well be a long time đŸ™‚ )? I’m sure 90% of riders at it will have some kind of similar device and they cant all run out before the end?…

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  • March 31, 2017 at 10:57 am #890069
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    philhubbard

    Did it two years ago. Your

    Did it two years ago. Your Garmin should be fine, I was using a Mio 505HC without bluetooth and I still had 40% battery left at the end. The feed stops are really good. Proper food, sandwiches and stuff on offer as well as sausage rolls, cake and jelly babies. 

    Main advice would be to try and find a group on the flats as it can be quite windy and exposed if you’re solo and try and get up near the front before a climb, can be a bit of a nightmare if you’re at the back due to people, walking, stopping and slowing down. I found myself weaving through the groups quite a bit which was a nightmare.

    March 31, 2017 at 10:04 am #890067
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    DaveE128

    Back to the original question

    Back to the original question, my experience of using an Edge 800 is that only using the map screen when really necessary makes a significant difference to battery life. I have also used a USB portable charger with good results: http://amzn.eu/8N6WM5q I’ve found this (and other products with the same brand) to be good quality. I’d probably wrap it in something soft before taping to stem/top tube, as they probably aren’t designed to deal with road shocks/vibration.

    March 31, 2017 at 8:42 am #890065
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    700c

    I tried – and failed – some

    I tried – and failed – some years back on a 34/29. There’s no shame in walking, plenty will be up hardknott. it’s 30% + and not just at the hairpins. If you’ve managed 34% gradients before on 36/28 ??!! then in theory you will be OK.

    Then again after 90 miles + the longer ascent of hardknott, it would be unnecessarily hard to try it on your current set up.

    As others have said definately get a compact for this ride and good luck.

    March 31, 2017 at 7:33 am #890063
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    abusivemonk

    Thanks for the advice re

    Thanks for the advice re gearing. Will see if I can get a 32t cog in there and try and borrow a 34t cog from the wifes bike. I think pacing will be the most important factor. And fuelling. Any idea what the food stops are like, and the best fuelling strategy for the ride. My mate says take some real food ( Ginster’s pasty) for about half way point for a psychological boost

    March 30, 2017 at 4:20 pm #890061
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    Alfrado

    You want to save your legs as

    You want to save your legs as much as you can. Hold back until you get to hardknott then if you’ve got something left you’ll get up it and finish strong. Compact with 32 is best. Also I wouldn’t load route on Garmin. Star all the major climb segments in strava and then when your approaching the climbs it will automatically prepare you for what’s coming. Also you’ll get the gradient map so you can pace yourself. Don’t think stared segments work when following a route.  Fred Whitton climbs strava segments:

    5.5 miles – Kirkstone Pass from Holbeck Ln (full climb) – 4513289

    20 miles – Ullswater-Matterdale climb – 1144239

    27 miles – A66 climb – 1.2 miles – 677912

    42 miles – DP Honister climb – 5956789

    47 miles – OFFICIAL 100Climbs No81 Newlands Hause – 6677326

    55 miles – Whinlatter – 1.8 miles – 2646437

    66 miles – Fangs Brow – 651758

    69 miles – Cogra Climb to Croasdale – 3778055

    74 miles – Another 100 Climbs No180 Burn Edge – 7218056

    81 miles – Stanley Arms to the Red Admiral –1088740

    86 miles – Climb out of Stanton Bridge – 5892499

    93 miles – Hardknotts Pass – 637403

    96 miles – The Whole of Wrynose – 1807845

    102 miles – Little Langdale little climb – 4490357

    March 30, 2017 at 1:05 pm #890059
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    abrooks

    Slightly off topic as you

    Slightly off topic as you already have a great computer but if anyone was looking for a new one the Wahoo Elemnt Bolt is well featured, navigates, takes texts and phone calls when paired to a ‘phone  and (probably due to the black and white screen) has a battery life of 15 hours even with turn by turn navigation on.

    I don’t work for Wahoo, but I did buy one and first impressions are really good.  I upgraded from an Edge 500 though, not one of the newer ones.

    March 30, 2017 at 11:40 am #890057
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    turboprannet

    I tape a USB power block

    I tape a USB power block under the stem and run a charging cable up for events where it is potentially going to run out. Turn off Bluetooth and put the timeout to the lowest, brightness down etc. I can get 8 hours out of a 3 year old well-used 810 this way.

    There are a few vids on youtube showing you how to get 11-32 to work on SS mechs. I think Durianrider has one if you can put up with the swearing. Gavlee is right it is a matter of maxing the b screw.

    March 30, 2017 at 11:06 am #890055
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    Gavlee

    Used compact crank and 32
    Used compact crank and 32 rear on short cage ultegra. Best to save the legs as much as you can for the grind fest at 99miles. I’d imagine a 32 would work on di2 also as it just needs the bscrew adjusting to clear the top jockey on the 32t. I had more adjustment left if needed but didn’t fancy trying a 34t. Chain needed 2 extra links from prev set up similar to your current one.

    March 29, 2017 at 5:14 pm #890053
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    abusivemonk

    Sorry to hi-jack this thread

    Sorry to hi-jack this thread a little, but I’m also doing the Fred Whitton. I was just wondering if I need to change gearing. I’m currently running 36 x 28 as a lowest gear currently. i dont think I can swap out the cassette to a 32t, as it’s Di2 short cage. i could possibly buy a 34t front cog, but am wondering if it’s worth it. I can currently get up 34% hills (Mytholm Steeps) with this set-up and have a watts/kg of 3.6ish. Any thoughts?

    March 29, 2017 at 10:18 am #890051
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    700c

    turn off ‘turn by turn’

    turn off ‘turn by turn’ navigation. should last 12+ hours. 

    March 28, 2017 at 2:58 pm #890049
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    tritecommentbot

    The 810 will last 6 hours no

    The 810 will last 6 hours no problem.

     

    So don’t worry.

     

    angel

    March 28, 2017 at 2:46 pm #890047
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    Gavlee

    As thereverent says this will
    As thereverent says this will be more than enough to get around the fred within the cut off times and the garmin to be on. First attempt my mate used a 1000 with backlight on and WiFi. It turned off 3/4 of the way round. Following year he bought a usb battery back up but didnt need it once he had done the above. I used 510 both times turned everything off apart from sensors and route (basic on 510) with 50 odd % left on it at the end (8hrs). Enjoy the Fred, great but tough event, your 810 will be fine my legs gave up much sooner than the garmin.

    March 28, 2017 at 2:44 pm #890045
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    IHateSummer

    Backlight and Brightness are

    Backlight and Brightness are the main killer for my Garmin 1000 – two separate settings on mine. Brightness down to 1/10 and Backlight timeout to 15 seconds.

    For external battery, I use an Anker PowerCore  – big capacity – 3350mAh but is small enough to cable tie neatly under my stem – 95mm long by 23mm dia. I’ve done 250+ miles over 23 hours with such a setup, using the battery to charge the Garmin as I go.

    March 28, 2017 at 1:43 pm #890043
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    arckuk

    Get yourself a small USB

    Get yourself a small USB battery charger and short mini USB cable – I looked around recently, and the best option seemed to be a Veho Pebble Ministick, slightly smaller and slightly more durable looking than the thousands of similar options on ebay. You can tape to your top tube and connect to charge while running the Garmin, or leave in a back pocket, and recharge while stopped.

    Otherwise, turn off bluetooth and turn backlight to low, which extends life quite significantly. Download the gpx to follow as a course if you want, but only follow that if necessary (this doesn’t make a huge difference in my experience on the 810, but I believe the 820 drains particularly quickly when following a course).

    March 28, 2017 at 1:27 pm #890041
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    bendertherobot

    Swap to a Fenix 5

    Swap to a Fenix 5 đŸ˜€

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